Home / 650,911.20-976,942.80-384,338.40

Finding the Fourth Proportional to 650,911.20, 976,942.80 and 384,338.40

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Solution

The fourth proportional to 650,911.20, 976,942.80 and 384,338.40 is: 576,847.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,911.20 : 976,942.80 = 384,338.40 : x
  2. Step 2: Convert to fraction form
    650,911.20/976,942.80 = 384,338.40/x
  3. Step 3: Cross multiply
    650,911.20x = 976,942.80 × 384,338.40
  4. Step 4: Simplify right side
    650,911.20x = 375,476,632,643.52
  5. Step 5: Solve for x
    x = 375,476,632,643.52/650,911.20
  6. Step 6: Final answer
    x = 576,847.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.